<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>           
        </el-breadcrumb>

        <!-- 卡片视图 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="8">
                    <!-- 搜索与添加按钮 -->
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable
                    @clear="getGoodsList">
                      <el-button slot="append" icon="el-icon-search"
                      @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="goAddpage">添加商品</el-button>
                </el-col>
            </el-row>

            <!-- table表格区域 -->
            <el-table :data="goodslist" border stripe>
                <!-- 索引列 -->
                <el-table-column label="#" type="index"></el-table-column>
                <el-table-column label="商品名称" prop="goods_name"></el-table-column>
                <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
                <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
                <el-table-column label="创建时间" prop="add_time" width="140px">
                    <template slot-scope="scope">
                        {{scope.row.add_time | dateFormat}}
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="130px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" 
                        size="mini" ></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" 
                        size="mini"  @click="removerById(scope.row.goods_id)"></el-button>
                        
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[5, 10, 15, 20]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total" background>
            </el-pagination>

        </el-card>
    </div>
</template>
<script>
export default {
    data () {
        return {
            //查询参数对象
            queryInfo: {
                query: '',
                pagenum: 1,
                pagesize: 10
            },
            //商品列表
            goodslist: [],
            //总数据条数
            total: 0
            
        }
    },
    created() {
        this.getGoodsList()
    },
    methods: {
        //根据分页获取对应的商品列表
        async getGoodsList() {
            const {data: res} = await this.$http.get('goods', {
                params: this.queryInfo})

            if(res.meta.status !==200) {
                return this.$message.error('获取商品列表失败！')
            }
            this.$message.success('获取商品列表成功！')
            console.log(res.data)
            this.goodslist = res.data.goods
            this.total = res.data.total
        },
        // 监听 pageSize 改变的事件
        handleSizeChange(newSize) {
            // console.log(newSize);
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听 页码值 改变的时间
        handleCurrentChange(newPage) {
            // console.log(newPage)
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        //根据id删除对应的商品列表信息
        async removerById(id) {
            //询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
        }
        ).catch(err => err)

        if(confirmResult !== 'confirm') {
            return this.$message.info('已取消删除')
        }

        const {data: res} = await this.$http.delete(`goods/${id}`)

        if(res.meta.status !== 200) {
            return this.$message.error('删除商品失败！')
        }
        this.$message.success('删除商品成功！')
        //重新获取商品的列表数据
        this.getGoodsList()
        },
        //
        goAddpage() {
            this.$router.push('/goods/add')
        }

    }
}
</script>
<style lang="less" scoped>
    
</style>